Backward compatible multi-carrier transmission system
US7570694B2 · kind B2 · utility
10Cited by
1References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 11, 2004 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | Feb 8, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2604
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The transmission system is backward compatible with a former transmission system (DVB-T), enabling a receiver of the former system to receive signals transmitted by a transmitter of the new transmission system. A new modulation is used to transmit additional information bits corresponding to a new service. The new modulation is specified by a combination of the former modulation with a new-built over modulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.